Sand braking device, particularly adapted for use on automobiles



'M. FRIEDRICH June 4, 1935.

SAND BRAKING DEVICE, PARTICULARLY. ADAPTED FOR USE ON AUTOMOBILES Filed March 30, 1933 Patented June 4, 1935 SAND BRAKING DEVICE, PARTICULARLY ADAPTED FOR USE ON AUTOMOBILES Max Friedrich, Chicago, Ill.

Application March 30, 1933, Serial No. 663,585

1 Claim.

My invention is a sand braking device, particularly adapted for use on automobiles, in which a sand spreading mechanism in the rear of vehicle, is actuated by a sand pedal and adapted to be operated in conjunction with the operation of the clutch pedal. The objects of my invention are: to provide a sand braking device wherein sand is spread in front of the rear wheels of the vehicle by a spout from the sand reservoir and a shut-off in the reservoir operated by a pedal adjacent to the clutch pedal.

This invention is advantageous over other devices in that; it is a simple mechanically operated device requiring little or no adjusting or repairing after installation and it is not directly connected to the clutch or brake, thereby eliminating the necessity of disconnecting, when the device is not in use.

An illustrative embodiment of this invention is shown in the accompanying drawing, wherein:

Fig. 1 is a side view of an automobile showing the device in position.

Fig. 2 is a vertical section of the sand reservoir and the shut-oh? in open position, on line 2-2, Fig. 3.

Fig. 3 is a plan view 33, Fig. l of the pedal arrangement.

Fig. 4 is a rear view, with a portion of the reservoir cut away, the sand trap in cross section and the shut-01f in closed position.

In the form shown in the accompanying drawing, the sand braking device comprises a sand reservoir I, extending over the rear axle of the vehicle and having a removable cover 2. At each end of the reservoir I, is a spherical sand trap 3, the lower half of which is perforated with small holes 4, to permit the sand to seep inside the trap 3. The shut-off or stopper 5, preferably made of thick rubber, is seated in the opening 6 of the spout l, and suitably fastened to one end of rod 8. The stopper 5 is actuated downward into opening 6, by a strong spring 9. The upper end of rod 8 is linked to lever arm ID in such a manner as to be lifted upward, as the lever arm It, is keyed to shaft H, which is revolved by the actuating lever arm I2 outside the sand reservoir I. This arm I2 is connected by a flexible wire or cable I3, extended over guides or pulleys M, to the lower end I5, of the pedal I6. On the pedal I6 is an enclosed spring I! suitably fastened on the steering shaft.

When the driver of the vehicle wishes to stop on slippery pavement, he simply moves his left foot into contact with the sand pedal IS.

The

pedal I6 may be depressed independent of the clutch pedal, but is adapted to be operated in conjunction therewith. By pressing the sand pedal I6 down, the wire or cable I3, is drawn forward, actuating the lever arm I2, thereby revolving the shaft II, and the lever arm I0. The lever arm I 0 raises the rod 8, against the action of the spring 9, allowing the sand to pour also gives slack to the cable I3.

The slack in the cable 1 3 permits the spring 9 to force the stopper 5 into the seat of the opening 6 of the spout 1, thereby shutting off the stream of sand through the spout. Drawing down the stopper 5 naturally brings the lever arm I 9 down, revolving the shaft II and the lever arm I2, back to their normal position, making the cable I3 taut and the entire mechanism in readiness for the next application of the sand pedal I6.

Although but one specific embodiment of this invention has been herein shown and described, it will be understood that numerous details of the construction shown may be altered or omitted, without departing from the spirit of this invention.

What I claim is:

A sanding device including a supply reservoir; a bulbular sand trap within said reservoir, an outlet spout connected with said trap,

a downwardly closing spring controlled valve arranged within said trap for normally closing said outlet; said trap having only its lower half formed with perforations to limit the amount of sand entering the outlet spout, but

mined intervals.

MAX FRIEDRICH. 

